M&C TechGroup SP2006-H280_DIL Operator's manual - Manual (Page 28)

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Gas sampling and gas conditioning technology 2-1.1.7.2-ME
Figure 17 shows the position of the eductor and the O-ring seals in the bypass block
Figure 18 Bypass block with eductor and O-ring seals
Please proceed as follows:

Use the delivered special tool to remove the critical orifice and/or the eductor from the block as
described in figure 16 or 17

Clean the orifice and/or the eductor in an ultra sonic bath

Check the o-rings and change them if necessary (see figure 18 and 19)

Push the critical orifice and eductor with its nozzle seat and o-ring carefully back into the block by
using the special tool as described in figure 16 or 17
Now, the dilution unit can be reassembled in reverse order.